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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Help Me Diagnose These Noises-



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      11-11-2012, 07:02 PM   #1
sgtpeper
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Help Me Diagnose These Noises-

Hi All,

So I hadnt driven my car in a few days and I started and there was a slight squeal for maybe a second when I started the car. The same thing happened again today when I first started the car after not driving it for a day. Its about 30 degrees here in Denver today and the car definitely sounded a bit like a diesel. Any ideas?

The other issues I've noticed for the last week or so is that when I'm idling even when the engine is warm I sometimes get a sort of stutter. I checked for codes and I don't have any. What could this be?

I have accessport (last 500 miles), cone intake (last 500 miles), new plugs, fresh oil.

Thanks in advance for the help.
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      11-11-2012, 08:19 PM   #2
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Its completely normal for the car to run a bit rough when its for cold outside. But once warmed up it should run fine, if not its either plugs (you have new ones to forget that) injectors coils or carbon buildup.
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      11-11-2012, 09:29 PM   #3
sgtpeper
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When do most people see problems with carbon buildup? I'm at ~31k miles now.
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      11-12-2012, 11:48 AM   #4
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Bump?
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      11-15-2012, 01:11 AM   #5
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Bump? Help?
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